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Ink Set

Active Publication Date: 2015-10-01
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The purpose of this patent is to create an ink set that can produce clear and smooth recorded matter, even on uneven surfaces. The goal is to improve the overall quality of the recording process.

Problems solved by technology

This method, however, has difficulty in obtaining satisfactory brightness when a recording medium with poor surface smoothness (low smoothness) such as plain paper is used.
This is because the bright pigment is not disposed smoothly on the recording medium with poor surface smoothness, which causes the diffuse reflection of light.
That is, the resin components of the resin ink prevent the solvent of the bright pigment ink from permeating the recording medium, which makes it impossible to dispose the bright pigment on the surface of the recording medium smoothly.
As a result, a blur and unevenness of the bright pigment ink occur to lose brightness.

Method used

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Examples

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examples

[0102]Next, examples of the present teaching will be explained together with comparative examples. Note that the present teaching is not limited and is not restricted to the examples and the comparative examples which will be described below.

examples 1-1 to 1-21

[Examples 1-1 to 1-21 and Comparative Examples 1-1 to 1-8 ]

[0103]Respective components indicated in a treatment agent composition (TABLE 1) were mixed uniformly or homogeneously, thereby obtaining each of the treatment agents 1 to 23. In TABLE 1, the unit of the composition of each of the treatment agents is % by weight, and each numerical value in TABLE 1 indicates an active-ingredient amount (solid content amount).

[0104]Components, except for the bright pigment, which were included in a bright pigment ink composition (TABLE 2) were mixed uniformly or homogeneously, thereby obtaining an ink solvent. Subsequently, the ink solvent was added to the bright pigment, followed by being mixed uniformly. After that, the obtained mixture was filtrated through a cellulose acetate membrane filter (pore size 3.00 μm) produced by Toyo Roshi Kaisha, Ltd., and thereby obtaining each of the bright pigment inks 1-1 to 1-7. In TABLE 2, the unit of the composition of each of the bright pigment inks is...

examples 2-1 to 2-25

[Examples 2-1 to 2-25 and Comparative Examples 2-1 to 2-19]

[0133]Respective components indicated in a treatment agent composition (TABLE 4) were mixed uniformly or homogeneously, thereby obtaining each of the treatment agents YP1 to YP 22, MP1 to MP3, CP1 to CP4, KP1 to KP3, YD1 to YD3, MD1 to MD3, and CD1 and CD2. In TABLE 4, the unit of the composition of each of the treatment agents is % by weight, and each numerical value in TABLE 4 indicates an active-ingredient amount (solid content amount).

[0134]Components, except for the bright pigment, which were included in a bright pigment ink composition (TABLE 5) were mixed uniformly or homogeneously, thereby obtaining an ink solvent. Subsequently, the ink solvent was added to the bright pigment, followed by being mixed uniformly. After that, the obtained mixture was filtrated through a cellulose acetate membrane filter (pore size 3.00 μm) produced by Toyo Roshi Kaisha, Ltd., and thereby obtaining each of the bright pigment inks 2-1 to ...

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Abstract

An ink set includes a treatment agent containing fumed silica and a bright pigment ink containing a bright pigment and water. The treatment agent or the bright pigment ink contains urethane resin.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present application claims priorities from Japanese Patent Applications No. 2014-072043 filed on Mar. 31, 2014 and No. 2014-072046 filed on Mar. 31, 2014, the disclosures of which are incorporated herein by reference in their entireties.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention:[0003]The present invention relates to an ink set.[0004]2. Description of the Related Art:[0005]There is a growing need for recorded matters having bright images (metallic luster feeling) formed thereon in recent years. As a method for obtaining the bright recorded matter, there is known a method for discharging a bright pigment ink onto a recording medium having good surface smoothness (high smoothness) such as glossy paper in accordance with the ink-jet system. This method, however, has difficulty in obtaining satisfactory brightness when a recording medium with poor surface smoothness (low smoothness) such as plain paper is used. This is beca...

Claims

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Application Information

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IPC IPC(8): C09D11/322C09D11/102
CPCC09D11/102C09D11/322C09D11/38C09D11/54
Inventor IMAI, KENJIROFUKAYA, HIDEJIOHISHI, AYAKOMAEDA, MITSUNORIKODAMA, AKIKO
Owner BROTHER KOGYO KK
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